No, as evidenced by the fact that you can almost always hear when a participant calls in from their car. When they start talking, you hear the road noise in the background.

The only thing car-kits seemed to do was add minimum cut-offs before transmitting and make use of directional microphones.

No, not even close. The problem space is still mostly unsolved.

Of all companies poised to solve it, I think Apple could do it if they wanted. They could embed microphones in the laptop frame and integrate it with the camera as a premium feature, since they control the hardware and software stack.

It's more practical than a touch bar, at least.

What’s a car-kit? Just googled but didn’t find anything relevant

Those adapters that let you use your phone through the audio system of your car (adapter does the noise-cancelling).

Ah I see never heard of them

What do you mean by car-kits?